Arizona Gold & Silver Reports Up To 99% Gold Recovery From Agitation Leach And 84% Gold Recovery From Heap Leach Cyanide Processing Of Bulk Sample From The Philadelphia Project, Arizona
Original announcement by tmx on
- Company
- Arizona Gold & Silver Inc.
- Ticker
- AZS
- Exchange
- TSX
- Region
- Arizona
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Metallurgy
- Extracted
- 2026-08-20 21:18:42 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Arizona Gold & Silver reported successful metallurgical test results from a bulk sample at the Philadelphia gold-silver project. Gold recoveries reached up to 99% via agitation leach and 84% via heap leach using HPGR crushing, demonstrating strong potential for both high-grade and lower-grade ore processing.
Reasoning: The results show high gold recoveries across two different processing routes (agitation and heap leach) on a bulk sample, with HPGR technology providing a clear metallurgical advantage.
Positive factors
- High gold recovery in agitation leach (up to 99%)
- Strong heap leach recovery (84%)
- HPGR crushing demonstrated significant improvement over conventional crushing
- Low cyanide and lime consumption in agitation tests
- QA/QC disclosed with QP sign-off
Negative factors
- Silver recovery in heap leach is relatively low (37%)
Facts used in scoring: 4
Classification and evidence
QA/QC Disclosedpositive · Story-specific tag
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release mentions strict chain-of-custody protocols and a Qualified Person (Gregory Hahn) sign-off.
Evidence · text
“under strict chain-of-custody protocols”
QP/CP Signedpositive · Story-specific tag
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: Gregory Hahn, a Certified Professional Geologist, is named as the Qualified Person.
Evidence · text
“Qualified Person Gregory Hahn... is a Qualified Person under National Instrument 43-101”
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Metallurgical Results (4)
bottle rollgoldRecovery: 99 %Head Grade: 1.958Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- agitation leach cyanidation
- Sample
- Agitation leach cyanidation on bulk sample (0.40-0.136mm grind)
- Grind P80
- 110 µm
- Leach Time
- 120 hours
Recovery
- Recovery
- 99 %
- Recovery Basis
- actual_test
- Head Grade
- 1.958
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 0.145 kg/t
- Lime
- 0.5 kg/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: 99% recovery is exceptional for agitation leach.
Positive factors
- Exceptional gold recovery
Evidence · text
“Gold recovery of 91-99% was achieved by agitation leach cyanidation”
bottle rollsilverRecovery: 60.5 %Head Grade: 3.08Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- agitation leach cyanidation
- Sample
- Agitation leach cyanidation on bulk sample (0.40-0.136mm grind)
- Leach Time
- 120 hours
Recovery
- Recovery
- 60.5 %
- Recovery Basis
- actual_test
- Head Grade
- 3.08
- Head Grade Unit
- g/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: Silver recovery of 49-72% is moderate to strong.
Positive factors
- Solid silver recovery
Evidence · text
“Silver recovery of 49-72% was achieved by agitation leach cyanidation”
column leachgoldRecovery: 84 %Head Grade: 1.958Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- column leach
- Processing Route
- heap leach cyanidation
- Sample
- Heap leach on bulk material crushed to -6.3mm using HPGR
- Leach Time
- 4248 hours
Recovery
- Recovery
- 84 %
- Recovery Basis
- actual_test
- Head Grade
- 1.958
- Head Grade Unit
- g/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: 84% recovery for heap leach is strong, especially with HPGR.
Positive factors
- Strong heap leach recovery
- HPGR advantage demonstrated
Evidence · text
“Gold recovery of 84% was achieved by heap leach on bulk material crushed to -6.3mm using HPGR”
column leachsilverRecovery: 37 %Head Grade: 3.08Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- AZS
Test Work
- Program Status
- preliminary
- Test Type
- column leach
- Processing Route
- heap leach cyanidation
- Sample
- Heap leach on bulk material crushed to -6.3mm using HPGR
- Leach Time
- 4248 hours
Recovery
- Recovery
- 37 %
- Recovery Basis
- actual_test
- Head Grade
- 3.08
- Head Grade Unit
- g/t
Lab
- Laboratory
- Kappes, Cassidy & Associates (KCA)
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: 37% silver recovery in heap leach is relatively low.
Negative factors
- Low silver recovery
Evidence · text
“silver recoveries from bulk material under heap leach was 37%”
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.